Next generation tactical broadband data links based on phased array antennas. The technology provides unmatched range and stability and is ideal for high-mobility applications. The technology has been proven with unmatched performance for tactical operations for manned and unmanned aircrafts, vessels, vehicles and man-carried equipment.
Long-range Broadband Phased Array Antennas
The Cordis Array II series is the next generation technology solution for point-to-multipoint tactical data links. The system forms a wireless IP connectivity between multiple points with an unmatched range and bandwidth.
Compared to conventional point-to-point systems, the Cordis Array II has an electronically steerable beam that constantly optimizes the direction of transmission and reception. The electronic steering involves no moving parts, and enables the beam to be steered instantly in the direction to communicate with a moving object. The capability to establish a long-range tactical data link with a point-to-multipoint capability – and with broadband capability.
The Cordis Array II unit is an integrated radio and antenna panel that provides IP network connectivity between the radio stations. The connection to the antenna is an Ethernet cable – the same type of interface used in all computers and networks. The IP based system makes it inter-operable with all other IP based systems, and makes integration of systems through Cordis Array II data links easy and efficient.
Smart Antenna Technology
Conventional tactical radio technology
The picture shows how a conventional tactical radio technology where the radio waves propagate in all directions from the transmitter. This results in reduced operational range since most of the radio wave power is wasted in non-relevant directions. It also causes more interference for other radio systems operating on the same frequency, and makes the transmitter an easy target for unwanted tracking and monitoring.
Conventional tracking antenna technology
The picture shows a conventional motorized tracking antenna system with a narrow antenna beam directed in the direction of interest. The narrow antenna beam focuses the energy in the direction of interest and increases the operational range. Because the beam is locked with a motorized system, it can only operate as a point-to-point link. The motorized tracking antenna has a limited rotation speed that will not be able to track a fast moving unit.
Cordis Array II antenna technology
The picture shows the Cordis Array II technology where a narrow beam being steered to the direction of interest with no moving parts. The antenna beam is electronically steered and can change direction so fast that it follows a fast moving target. Even if the moving target exceeds the speed of sound, the Cordis Array II technology will be able to keep track.
Conventional motorized tracking antenna technology is only for point-to-point links where one ground station antenna provides a data link to a UAV. For each UAV there is one ground station antenna.
Conventional motorized ground tracking antenna
The picture shows a conventional motorized tracking antenna technology where one ground station antenna is required for each UAV.
The Cordis Array II technology with electronically steerable antennas is able to change the direction of the antenna instantly. This unique feature enables a single ground antenna to operate several UAV’s simultaneously. This point-to-multipoint functionality provides connectivity to all units in the network even if all units are moving.
Cordis Array II antenna technology
The picture shows the point-to-multipoint capability in the Cordis Array II system where a single ground station can operate several UAV’s. The narrow antenna beam instantly moves to the direction of interest for communication and focuses the radio power to provide long-range links to all UAV’s.
Challenging applications that require link also in non-line-of sight conditions will benefit from the high output power and sensitive reception system provided by the narrow beams in the Cordis Array II technology.
The Cordis Array II technology can endure a very high propagation path and will be able to operate beyond the direct line-of-sight with a performances exceeding conventional tactical radio systems.
Core Phased Array features
- Phased array with electronic beam steering of highly focused antenna beams
- Provides long range/link robustness & high bandwidth
- Technology fielded in real military operations. References can be provided
- Operates in C-band 4.900-5.900 GHz
- User data bandwidth options: 2.5 Mbps, 7 Mbps or 15 Mbps
- AES-256 link encryption embedded in hardware
- Ad-hoc wireless network system – IP based for flexible integration
- IP networking; UDP/IP, TCP/IP
- QoS for handling low latency data streams with guaranteed latency combined with general purpose IP traffic
- Simple interfacing: Power + Ethernet to the antenna panels – no extra boxes
- Excellent EMC properties – 30 dB better than MIL-STD-461F requirements – suited for co-location close to sensitive HF/VHF/UHF antennas
Comparison of data capacity and range
- HF, VHF and UHF systems have long wavelengths resulting in additional path loss and loss in antenna efficiency
- Phased system at C-band has high antenna directivity that compensates for higher path loss at high frequency
- Conclusion of analysis of capacity and link at 14 km range
- HF system at 2.4 kbps has very high signal margin (> 20 dB) and is very robust
- VHF and UHF system at 20 kbps has acceptable signal margin
- UHF system at 1 Mbps has no connection
- Phased array system at 5 Mbps has very high signal margin and is very robust
Comparison of jamming resistance
- When the jammer is elevated the lower path loss of HF, VHF and UHF systems is a disadvantage
- The phased array system has a directive antenna and can suppress the signal from a jammer and there is a higher path loss
- The HF, VHF and UHF systems have implemented frequency hopping to improve the jamming resistance
- When all these mechanisms are combined, the overall conclusion of the analysis of jamming resistance at 14 km is that the following transmission power is required to jam the systems:
- 1 milliwatts for the HF system
- 5 milliwatts for the VHF system
- 327 milliwatts for the UHF narrow band system
- 163 milliwatts for the UHF broadband system
- 91 watts for the phased array system
- HF, VHF and UHF systems can be jammed at 14 km by a hand-carried jammer